PVT and Vapor Pressure Measurements on Ethane

Area of Science:

• Thermodynamics
• Fluid Properties
• Chemical Engineering

Background:

• Accurate thermodynamic data is crucial for designing and optimizing chemical processes.
• Ethane is a key component in natural gas and petrochemical feedstocks.
• Existing data for ethane properties may have limitations in certain conditions.

Purpose of the Study:

• To report new, precise measurements of ethane vapor pressures.
• To present comprehensive pressure-volume-temperature (PVT) data for ethane.
• To cover a wide range of temperatures, pressures, and densities, including near-critical conditions.

Main Methods:

• Experimental determination of vapor pressures.
• Experimental determination of PVT properties using specialized apparatus.
• Measurements conducted from near the triple point up to 320 K and 33 MPa.

Main Results:

• New vapor pressure data for ethane from 160 K to the critical point.
• Extensive PVT data obtained, covering densities exceeding three times the critical density.
• High-accuracy data generated across a broad operational envelope.

Conclusions:

• The reported data significantly expands the available knowledge base for ethane.
• This study provides critical data for thermodynamic modeling and process simulation.
• The measurements validate and extend existing ethane property correlations.